also, retired astronaut mark kelly whose wife, former arizona congresswoman, gabrielle giffords, was a victim of a mass shooting. n.r.a. c.e.o. saw law abiding gun owners will not accept blame for the acts of violence. the n.r.a. and mark kelly sent e-mails to supporters urging them to attend the hearing today. >> c.h.p. is getting closer in identifying the drivers involved in a dangerous side show in the middle of interstate 880 over the weekend. the crazy stunt could have had deadly consequences. we have the latest on the investigation and the emergency calls that came in during the incident. >> my god. my god. the c.h.p. is getting abundance of information leading to the drivers involved in this sideshow that happened saturday afternoon around 4:00 right in the middle of northbound 880 in oakland. >> someone posted this on the internet and i saw it, i saw a comment saying they knew someone in the video. >> caller who gave crucial information to the c.h.p. spoke exclusively to abc7 news saying he saw postings on facebook implicated the drivers. the c.h.p. also released 9-1-1 calls